<template>
    <p>{{ msg }}</p>
    <ChildCom :title="msg" @change="childChange"/>
</template>


<script>
import ChildCom from './ChildCom.vue';
export default{
    components:{
        ChildCom
    },
    data(){
        return{
            msg:"这是父组件的"
        }
    },
    methods:{
        childChange(value){
            console.log('value' ,value);
            console.log(this.msg);
            this.msg = value
        }
    }
}
</script>